Question 1

The reduction of nitrogen gas to ammonia is called nitrogen (fixation/cycling).

Accepted Answer

The answer of The reduction of nitrogen gas to ammonia...

Question 2

The members of the (alphaproteobacteria/gammaproteobacteria/actinomycetes) may alternate between a flagellated motile stage and a nonmotile stage attached by means of a prosthecae.

Accepted Answer

The answer of The members of the (alphaproteobacteria/gammaproteobacteria/actinomycetes) may alternate...

Question 3

Pleomorphic Gram-negative members of the Firmicutes that colonize mammalian respiratory mucous membranes are the

Accepted Answer

A)  mycobacteria. 
B)  clostridia. 
C)  Rickettsias. 
D)  Actinobacteria. 
E)  mycoplasmas. 
A)  mycobacteria. 
B)  clostridia. 
C)  Rickettsias. 
D)  Actinobacteria. 
E)  mycoplasmas.

Question 4

What feature of mycobacteria is responsible for the unusually slow growth of these bacteria?

Accepted Answer

A)  Their low tolerance for oxygen retards their growth. 
B)  They cannot fully metabolize carbohydrates and must rely on fermentation. 
C)  They lack a cell wall and are extremely fragile. 
D)  The mycolic acid in their cell walls requires signification metabolic investment. 
E)  They have limited numbers of ribosomes so protein production is slow. 
A)  Their low tolerance for oxygen retards their growth. 
B)  They cannot fully metabolize carbohydrates and must rely on fermentation. 
C)  They lack a cell wall and are extremely fragile. 
D)  The mycolic acid in their cell walls requires signification metabolic investment. 
E)  They have limited numbers of ribosomes so protein production is slow.

Question 5

The majority of archaea are extremophiles.

Accepted Answer

A) True 
 B)False

Question 6

The current taxonomy of the bacteria as described in Bergeyʹs Manual of Systematic Bacteriology

Accepted Answer

A)  is based largely on physical and metabolic characteristics. 
B)  includes three domains. 
C)  is primarily based on genetic sequences. 
D)  can be considered complete. 
E)  is universally agreed upon. 
A)  is based largely on physical and metabolic characteristics. 
B)  includes three domains. 
C)  is primarily based on genetic sequences. 
D)  can be considered complete. 
E)  is universally agreed upon.

Question 7

The genus of pathogenic cocci responsible for a wide range of human disease and whose members grow in chains is (Staphylococcus/Streptococcus/Enterococcus).

Accepted Answer

The answer of The genus of pathogenic cocci responsible for...

Question 8

The process by which a bacterial cell produces an endospore is called (endosporing/sporulation/vegetation).

Accepted Answer

The answer of The process by which a bacterial cell...

Question 9

A soil sample dilution spread on a plate containing carbohydrate-based medium yields a wide variety of colonies. One colony has no other bacterial colonies growing near it. Further investigation reveals the bacteria in the colony are Gram -positive and filamentous. The bacteria in the colony may be a member of the genus

Accepted Answer

A)  Streptomyces. 
B)  Bacillus. 
C)  Pseudomonas. 
D)  Enterococcus. 
E)  Acetobacter. 
A)  Streptomyces. 
B)  Bacillus. 
C)  Pseudomonas. 
D)  Enterococcus. 
E)  Acetobacter.

Question 10

Members of the Streptomyces are environmentally important because they can degrade a wide range of compounds including lignin from trees, chitin and keratin from animals, and latex.

Accepted Answer

A) True 
 B)False

Question 11

Cocci which divide along alternating planes may stick together to form

Accepted Answer

A)  staphylococci. 
B)  palisades. 
C)  streptococci. 
D)  sarcinae. 
E)  tetrads. 
A)  staphylococci. 
B)  palisades. 
C)  streptococci. 
D)  sarcinae. 
E)  tetrads.

Question 12

High G + C Gram-positive filamentous bacteria of the genus are capable of metabolizing a diverse range of environmental contaminants.

Accepted Answer

A)  Corynebacterium 
B)  Actinomyces 
C)  Rhizobium 
D)  Nocardia 
E)  Streptomyces 
A)  Corynebacterium 
B)  Actinomyces 
C)  Rhizobium 
D)  Nocardia 
E)  Streptomyces

Question 13

Many cyanobacteria carry out both oxygenic photosynthesis and nitrogen fixation, but oxygen inhibits nitrogen fixation. How do these cyanobacteria manage both processes?

Accepted Answer

A)  They trap the oxygen in special cells called heterocysts. 
B)  They produce cells called akinetes for photosynthesis. 
C)  The processes are seasonal; photosynthesis occurs in summer and nitrogen fixation takes place in winter. 
D)  Nitrogen fixation is sequestered in special cells called heterocysts. 
E)  They have special membranous structures like chloroplasts to separate the processes within the cell. 
A)  They trap the oxygen in special cells called heterocysts. 
B)  They produce cells called akinetes for photosynthesis. 
C)  The processes are seasonal; photosynthesis occurs in summer and nitrogen fixation takes place in winter. 
D)  Nitrogen fixation is sequestered in special cells called heterocysts. 
E)  They have special membranous structures like chloroplasts to separate the processes within the cell.

Question 14

Aerobic free-living Gram-negative bacilli in the phylum Proteobacteria that are capable of metabolizing a wide range of organic compounds are members of the genus

Accepted Answer

A)  Rickettsia. 
B)  Pseudomonas. 
C)  Cytophagia. 
D)  Salmonella. 
E)  Vibrio. 
A)  Rickettsia. 
B)  Pseudomonas. 
C)  Cytophagia. 
D)  Salmonella. 
E)  Vibrio.

Question 15

Bergeyʹs Manual of Systematic Bacteriology contains

Accepted Answer

A)  genetic sequences of prokaryotes. 
B)  recipes for bacterial growth media. 
C)  classification schemes for prokaryotes. 
D)  treatments for bacterial diseases. 
E)  rules for naming new bacterial species. 
A)  genetic sequences of prokaryotes. 
B)  recipes for bacterial growth media. 
C)  classification schemes for prokaryotes. 
D)  treatments for bacterial diseases. 
E)  rules for naming new bacterial species.

Question 16

A microbiologist observes what appears to be a pink -staining long rod within the periplasmic space of a Gram-negative bacillus. What is this structure likely to be?

Accepted Answer

A)  Rickettsia 
B)  Bdellovibrio 
C)  Chlamydia 
D)  a heterocyst 
E)  an endospore 
A)  Rickettsia 
B)  Bdellovibrio 
C)  Chlamydia 
D)  a heterocyst 
E)  an endospore

Question 17

Prokaryotes of the genus Pyrodictium are

Accepted Answer

A)  thermophiles. 
B)  halophiles. 
C)  endospore formers. 
D)  intracellular parasites. 
E)  members of the deeply branching bacteria. 
A)  thermophiles. 
B)  halophiles. 
C)  endospore formers. 
D)  intracellular parasites. 
E)  members of the deeply branching bacteria.

Question 18

Halophiles grow equally well in the presence or absence of high salt concentrations.

Accepted Answer

A) True 
 B)False

Question 19

Members of the genus Chlamydia are

Accepted Answer

A)  classified with the deeply branching bacteria. 
B)  Gram-positive bacteria. 
C)  intracellular parasites. 
D)  endospore-formers. 
E)  thermophiles. 
A)  classified with the deeply branching bacteria. 
B)  Gram-positive bacteria. 
C)  intracellular parasites. 
D)  endospore-formers. 
E)  thermophiles.

Question 20

A large number of Gram-negative human pathogens are members of the

Accepted Answer

A)  epsilonproteobacteria. 
B)  gammaproteobacteria. 
C)  deltaproteobacteria. 
D)  alphaproteobacteria. 
E)  betaproteobacteria. 
A)  epsilonproteobacteria. 
B)  gammaproteobacteria. 
C)  deltaproteobacteria. 
D)  alphaproteobacteria. 
E)  betaproteobacteria.

Exam 11: Characterizing and Classifying Prokaryotes

The reduction of nitrogen gas to ammonia is called nitrogen (fixation/cycling).

The members of the (alphaproteobacteria/gammaproteobacteria/actinomycetes) may alternate between a flagellated motile stage and a nonmotile stage attached by means of a prosthecae.

Pleomorphic Gram-negative members of the Firmicutes that colonize mammalian respiratory mucous membranes are the

What feature of mycobacteria is responsible for the unusually slow growth of these bacteria?

The majority of archaea are extremophiles.

The current taxonomy of the bacteria as described in Bergeyʹs Manual of Systematic Bacteriology

The genus of pathogenic cocci responsible for a wide range of human disease and whose members grow in chains is (Staphylococcus/Streptococcus/Enterococcus).

The process by which a bacterial cell produces an endospore is called (endosporing/sporulation/vegetation).

Members of the Streptomyces are environmentally important because they can degrade a wide range of compounds including lignin from trees, chitin and keratin from animals, and latex.

Cocci which divide along alternating planes may stick together to form

High G + C Gram-positive filamentous bacteria of the genus are capable of metabolizing a diverse range of environmental contaminants.

Many cyanobacteria carry out both oxygenic photosynthesis and nitrogen fixation, but oxygen inhibits nitrogen fixation. How do these cyanobacteria manage both processes?

Aerobic free-living Gram-negative bacilli in the phylum Proteobacteria that are capable of metabolizing a wide range of organic compounds are members of the genus

Bergeyʹs Manual of Systematic Bacteriology contains

A microbiologist observes what appears to be a pink -staining long rod within the periplasmic space of a Gram-negative bacillus. What is this structure likely to be?

Prokaryotes of the genus Pyrodictium are

Halophiles grow equally well in the presence or absence of high salt concentrations.

Members of the genus Chlamydia are

A large number of Gram-negative human pathogens are members of the

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Aids and Other Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

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